Improved cap for feeding-bottles for infants and invalids



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JOHN THOMPSON AND JAMES GEORGE INGRAM, OF LONDON, ENGLAND; SAID IN- GRAM ASSIGNS HIS RIGHT TO JOHN THOMPSON.

Leners Patent No. 90,606, dated May- 25, 1869.

IMPROVED CAP FOR FEEDING-BOTTLES FOR INFANTS AND INVALIDS.

The 'Schedule referred to in these Letters Patent and making part of the same.-

To all to whom it may concern:

Be it known that we, JOHN THOMPSON, vof No. 11 Aldersgate Street, and JAMES GEORGE INGRAM, of Wilner Gardens, Hoxton, London, England, subjects of the Queen of Great Britain, have invented or-discovered new and useful Improvements in Gaps -for Feeding-Bottles for Infants and Invalids 3 and we, the said JOHN THOMPSON and JAMES GEORGE IN- GRAM, do hereby declare the nature of the said invention, and in what manner the same is to be performed, to he. particularly described and ascertained in and by the following statement thereof; that is to say- According to this invention we form the cap of a feeding-bottle of India rubber, and moulded to form in dies by perssure, and vulcanized, the sides of the cap being made so that they will slip over and fit closely against the mouth of a feeding-bottle. In the centre of the top ofthe cap, a hole is formed, through which is to be led the flexible tube through which the contents of the bottle are to be drawn o".

Anumber of fine perforations is also formed through the cap, to allow of air entering the bottle, as duid is withdrawn therefrom.

We preferto form each of these perforations of three short straight slits, radiating from a point, thus, Y but the perforations may be otherwise formed.

Having thus described the nature of our invention, we will proceed tb describe more fully the manner of performing the same.

Figure l, of the drawinghereunto annexed, shows in section the form to which we prefer to mould the cap of a feeding-bottle.

A plan view ofthe cap is also shown at Figure 2.

In fig. 1, is also shown the ordinary exible tube a of the feeding-bottle passing through the hole in the centre'of the top of the cap. The outer end of this tube has a nipple attached to it, and the inner end is connected to a length of glass tube, which passes down to the bottom of the interior `of the feeding-bottle, as is usual.

The cap is by preference formed with a thickened rim around its lower edge, as is shown, to increase its strength andv rigidity.

The vulcanizable compound of India rubber and sulphur, of which the cap is to be formed, is moulded to the `shape desired in dies, a disk or lump of the compound being placed in the hollow die, and the plunger Of the die then forced down upon it, by which the compound is caused to fill all parts of the mould, and is so brought to the desired shape. v

If desired, a thin sheet of pure India rubber may be placed above the disk or lump of the vulcanizable compound before the plunger is forced down ou to it, so that this piece of pure rubber may form a liningto the inside of the top of the cap, this being the only part of the cap which comes in contact with the coutents of the feeding-bottle:

When the cap has thus been moulded to form, it is subjected to heat to effect the vulcanizing-process, as is well understood, and after this has been completed, the leech-bite or otherperforations are formed through its top. We prefer, as above stated, to form them of three straight slits radiating from a point. These are produced in the top of the cap by a cutter or punch, suitably formed, for the purpose, of three radiating blades of thin steel.

When using caps of India rubber, thusl moulded to form indies, and vulcanized, we prefer to form around the neck of the feeding-bottle, a narrow projecting ring, or beading, slightly larger-iu diameter than the interior diameter of the cap, so that after the cap has been drawn over this projecting ring, the sides of the cap spring inwards to their original diameter, and so the cap holds rmly on the mouth of thebottle.

Having thus described the nature of our invention, and the manner of performing the same, we would have it understood that whatwe claim, is-

The forming caps `of feeding-bottles, substantially as.

herein described from vulcanizable India-rubber coinpouuds, moulded to form in dies, by pressure, and subsequently vulcanized or changed.

J. THOMPSON.

J. G. IN GRAM. Witnesses:

G. F. WARREN, 'Both of No. 17 Graccclmrch T. L. WARNER, Street, London. 

